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hagtech wrote:

For a single driver, looks to me like you need an input signal of at least 3Vrms.  A lot of linestages can do that, so a single tube power amp seems both reasonable and interesting.

What actually I discovered the last week makes me VERY enthusiastic. I usually drive my horns with under 1V that… make it possible to drive then with …. preamp. Sure it doe not pump a lot of current but still it is possible sine I need no bass and no electric cones damping. Anyhow, I was experimenting with the single-stage Milq (the full gazed version not the prototype) and ended up trying with my Denon D30 mini-system. As I told before the D30 is amazing crap but still I have a bunch of small monitors that the D30’s 22W amps drives… So, I took the D30 headphone output and drove with it the single-stage Melquiades. To my great surprise the result was nothing short of stunning – I absolutely did not expect it. Sure it was not able to drive it with a lot power – increase of volume sent Sound to ugly clipping but at very low volume the Milq absolutely overridden the D30’s sound making it to sound very large, VERY dynamic (…and it is with the Celestion SL-600!!!!), surprisingly colorful and very inversing…. I was very pleased and puzzled with this effect….

BTW, Jim (and others) I have difficulties to source the necessary transformers for HF channels of single-stage Melquiades. Do you know any sources that sell the amorphous core for transformers in small quantities?

hagtech wrote:

You know, for somebody just taking a snapshot of a bunch of tubes for a forum post - it's really quite good.  Has that Ansel Adam's look.  I'd swear you used film.

Not really it was an old image that I took from the bottom of the Melquiades pages.

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